JP2732120B2 - ▲ with ▼ board decorative sheet for sewing product materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a decorative sheet having excellent flexibility especially in a laminated body including precious wood veneers, and in particular, an outer surface material of a bag such as a handbag, sandals, etc. And a decorative sheet for sewing material useful as a book binding material (book cover) and other sewing product materials.

(Prior Art) Conventionally, as an outer material of a bag such as a handbag, various kinds of natural leather, or synthetic leather or artificial leather such as an embossed resin film or dyed woven fabric as a substitute for the leather are mainly used. It is used.

As for surface materials such as sandals, natural leather or synthetic leather has been mainly used.

Further, leather may be used for the binding of luxury books.

On the other hand, decorative veneers thinly cut from name wood have been
For example, it is often used as an interior material for buildings, a surface decorative material for furniture furniture, and the like.

(Problems to be Solved by the Invention) However, as far as the applicant knows, there has been no example of applying such a decorative veneer veneer to the above-mentioned sewn products such as bags, footwear, book bindings and the like.

Accordingly, an object of the present invention is to provide a completely new board decorative sheet which is suitable for use of such a sewn product, having a design of a precious wood veneer.

Generally, the material of the sewing product is required to have a high degree of flexibility in order to facilitate sewing. Even if it is folded back, it is necessary that the sheet material be free from breakage such as cracks, and preferably be free from folds when the bending is returned. Furthermore, in order to perform simple thread sewing, it is required that the needle be easily penetrated.

In the case of bag materials, footwear materials, and the like, they are required to be non-permeable materials in order to prevent intrusion of rainwater.

On the other hand, laminated sheet sheets, which have been variously developed as surface decorative materials for furniture, usually have only the flexibility (variable shape) that can be bent to a maximum of about 90 mm and have high flexibility. Even a special sheet with
曲 げ bending was the limit, and it was not flexible enough to withstand the 180 fold turn required for sewing. In addition, even when a weak bending is performed, a bending mark may remain.

Therefore, the conventional laminated sheet cannot be diverted as it is as a sewn product, and it is extremely difficult to simply apply the conventional laminated sheet to a fabric and use it for a sewn product.

In order to obtain sufficient flexibility, it is considered to be more advantageous to use a so-called thin nameplate. However, if a thin sheet made of a structure such as a PVC (polyvinyl chloride) overlay sheet is used, the desired flexibility cannot be obtained, and the sheet is extremely thin, 0.15 to 0.25 mm. There is a possibility that defects such as air pools may increase. These defects are serious problems in quality such that their occurrence is determined as a defective product.

In addition, from the viewpoint of commercial value, the target decorative board sheet must fully reflect the grain of the nameplate and reflect as much as possible its elegance and texture. Further, even if the same plate is used, it is more preferable that the configuration can change the grain expression appearing on the sheet in various ways.

Further, in addition to the above-described high flexibility and aesthetic effects, the sheet needs to have characteristics such as mechanical strength required as a material of the sewn product.

Accordingly, an object of the present invention is to solve the above-mentioned problems, to provide a decorative board sheet, that is, a natural veneer veneer having extremely high flexibility (variable shape) and mechanical strength required for sewing. It is an object of the present invention to provide a decorative sheet for sewn product material that satisfactorily exhibits the grain of the garment.

(Means for Solving the Problems) In order to achieve such an object, the present inventors have conducted intensive studies, and as a result, attached a transparent film of soft polyvinyl chloride and a colored film of the same quality on both sides of a thin precious wood veneer. Wear
By laminating this to the underlying fabric and heat-pressing, the resulting laminated sheet is extremely flexible like synthetic leather or artificial leather, and does not cause any breakage of the board when folded 180 °, It has a large restoring ability, and has been found to have the characteristic that almost no fold remains even after strong bending or folding.

Furthermore, the present inventor has noted that the above-mentioned laminated sheet has no or little problem with the occurrence of defects such as air pockets and blinds on the surface where the grain of the board appears.
Furthermore, it was confirmed that the sheet itself had a high water impermeability required for a sewn product, and the present invention was completed.

That is, the decorative sheet for sewn product material of the present invention,
A transparent soft polyvinyl chloride film, a thin veneer veneer, a colored soft polyvinyl chloride film and a fabric are laminated and adhered from the surface side in this order and with an adhesive interposed therebetween, and then hot-pressed. It is characterized by being integrated.

The soft polyvinyl chloride film used in the present invention is not particularly limited as long as it has very high flexibility (deformability) and resilience. For example, a conventional commercial product may be used. Is used.

The transparent flexible polyvinyl chloride film constitutes the surface layer of the decorative sheet, and has a thickness of 100 to 200 μ, preferably about 15 μm.
A 0μ film is used. The higher the transparency of this film, the more preferable it is from the viewpoint of directly revealing the grain of the veneer underneath.

The colored soft polyvinyl chloride film is interposed between the precious wood veneer and the fabric and serves as a base film for the veneer, and usually a film having a thickness of 50 to 150 μm, preferably about 80 μm is used. Is done. This film can be applied to the present invention in any color, but from the viewpoint of better appearance of veneer veneer,
Those colored in the same color tone as the color of the veneer or a color tone close thereto are preferable. Most preferably, it is a light-colored or white-colored film. However, depending on the combination of the color tone of the veneer and the color of the colored film, the grain pattern can be left, but the colors can be summarized in such a way that the viewer does not immediately think that the veneer is used. The method of coloring the film is not limited at all, and the film may be colored, for example, by adding a conventional coloring agent.

The precious wood veneer used in the present invention is a so-called thin veneer having a thickness of 0.06 to 0.25 mm. More preferably, the thickness is 0.10-0.
It is a 15mm precious wood veneer. Examples of precious wood veneers include various precious wood such as Japanese cypress, oak, zelkova, cherry, yu, black persimmon, Tochigi, yellowfin, shioji, tabunoki, akadamo, makore, tamo, sen, mizunara, or teak, rosewood. , Mahogany, birth maple, walnut, zebrawood, kokutan, rosewood, abodyra, mangashiro,
Dao, Satin Wood, Brazilian Rose, Andean Rose, Wonderwood, Brazilian Core, African Rose, Eurasia Antique, White Tagaya, Bamsel Rose, Amazon Rose, Tamakura, Karin, Royal Pine, Bersimon, Chin Chan Rose, Siamese Persimmon,
Plates cut from imported materials such as bubinga, olive walnut, claro walnut, iris rose, indian rose, leo, silver heart and the like.

The fabric used in the present invention is a material constituting the lowermost layer of the decorative board sheet, and various conventional knitted and woven fabrics, preferably those having a tight weave, such as broad (poplin), can be applied. The fabric is 100-300μ thick, preferably about 20μ
It is good to use a thing of 0μ.

The board decorative sheet of the present invention comprises, from the front side, a first adhesive layer between the transparent soft polyvinyl chloride film and the thin veneer veneer, and a second adhesive layer between the nameplate veneer and the colored soft polyvinyl chloride film. And the third adhesive layer is interposed between the colored film and the fabric, and integrated by hot pressing.

Each of the first, second and third adhesive layers is naturally required to be composed of a liquid adhesive or an adhesive film or the like having a high adhesive strength to the material to be bonded on both the upper and lower sides. For both adhesive layers, it is necessary to select and form one or several types from the group of adhesives that can form an adhesive layer that has high flexibility and does not break even by strong bending of the sheet. .

Further, each adhesive layer is required to have the following characteristics.

The first adhesive layer needs to be a highly transparent adhesive layer in order to expose the lower veneer grain as it is. Accordingly, as the adhesive constituting this layer, for example, an ethylene-vinyl acetate emulsion type adhesive, an adhesive film of the same kind, and a polyurethane liquid adhesive are suitable.

The second and third adhesive layers are required to be composed of an aqueous adhesive in which the surface of the polyvinyl chloride film is not eroded by the components of the adhesive, particularly the solvent. Direct application of the adhesive to the veneer itself is extremely difficult in terms of coating technology, and application of the adhesive solution to the fabric often causes the problem of penetration and permeation of the solution. This is because application to a vinyl film is required. Therefore, as the adhesive constituting these layers, for example, an ethylene vinyl acetate emulsion type adhesive is suitable.

Moreover, the board decorative sheet of the present invention can be manufactured, for example, by the following method. First, the second and third adhesives are applied to both sides of the colored flexible polyvinyl chloride film and dried, and then the laminated veneer is laminated on one side of the film and the fabric is laminated on the opposite side of the film. After sticking, this is put into a hot press machine, and is hot-pressed under predetermined conditions, then cooled and taken out from the press machine.

Next, the first adhesive is applied to the veneer surface of the obtained laminate, dried, and then a transparent soft polyvinyl chloride film is laminated and adhered. The face plate is placed on the transparent film surface, hot-pressed under predetermined conditions, cooled, and taken out from the press.

The conditions of the heat compression are appropriately selected in consideration of the type of the material to be used, the thickness, etc., and the temperature is 110 to 140 ° C., and 7 to 10 kg / c.
It is usually carried out at a pressure of m ² and a time of 5 to 15 minutes.

(Effect) The decorative sheet of the present invention has a sandwich laminated structure in which a backing material is made of a fabric, and a soft polyvinyl chloride film having high flexibility and resilience is superimposed on both front and back surfaces of a thin precious wood veneer. It is a seat with a body. In addition, an adhesive that forms a flexible adhesive layer is usually used for attaching the materials. Therefore, in the decorative sheet of the present invention, as a whole, large flexibility is obtained such that the veneer can withstand a bending of 180 ° without breaking the veneer and can sufficiently withstand the strength, and the trace does not remain even in strong bending. Excellent restorability is also obtained.

Moreover, since the sheet of the present invention is lined with a fabric, hand sewing and sewing with a sewing machine can be easily performed. Further, even after sewing, the binding strength of the sewing thread can be maintained at a high level as compared with the case where the front and back surfaces of the sheet are resin surfaces.

In addition, the decorative sheet of the present invention is a laminated sheet in which soft resin films are disposed on both the upper and lower sides of a precious wood veneer, so that defects such as air pockets and flaws seen in a conventional polyvinyl chloride overlay film can be prevented. It does not occur at all or occurs only to the extent that it does not cause a problem in practical use.

 The reason seems to be as follows.

About the air pool Even with a high-precision press machine, some pressure unevenness occurs. Also, the thickness of the veneer varies, albeit slightly. For this reason, complete bleeding is not performed during lamination molding,
In the obtained product, there may be a case where a defect of a so-called air pool where air bubbles remain between the resin layer and the veneer occurs. Since the conventional polyvinyl chloride overlay film is coated with a resin on one side of the plate, the pressure is uneven and a complete air bleeding is difficult, and the above-mentioned defects are sometimes seen.

On the other hand, in the sheet of the present invention, the polyvinyl chloride films on the upper and lower sides are both softened and melted at the time of hot pressing, so that the unevenness of the load of the pressing pressure is reduced, the load becomes uniform, and complete air release is achieved. It is possible to eliminate the above defects.

Regarding the falsification of thin veneers, depending on the type of tree, there is a vessel that penetrates the veneers. For example, if the size of the vessel is 100-300μ
Mizunara, Yachidamo whose dimensions are 100 to 400μ,
Further, there are zelkova and the like having the same dimensions of 100 to 250 μm.

Conventionally, at the time of hot pressing, an overlay resin softened and melted enters a single plate vessel, and the molten resin is often taken out from a press before filling the inside of the vessel. On the surface of the product obtained as a result, there were cases where a so-called eye flaw was generated in which a large number of small concave portions were formed at portions corresponding to the vessel portion of the veneer. In particular, when the above-mentioned thin veneer was used, there was a tendency for remarkable filing to occur.

On the other hand, in the sheet of the present invention, at the time of hot pressing, the polyvinyl chloride on both the upper and lower sides of the veneer softens and melts together, penetrates into the duct of the veneer from both the upper and lower sides, and completely fills the inside. The sheet is then removed from the press. Therefore, there is no occurrence of eye drop.

In addition, the decorative board sheet of the present invention, by disposing the transparent resin film on the surface layer, the grain of the underside of the precious wood veneer appears as it is, so that the grain-specific texture and aesthetic effect are exhibited. be able to.

Moreover, since the surface of the sheet of the present invention is a resin, it is naturally a water-impermeable material.

Further, in the case of a sheet having a laminated structure of polyvinyl chloride film / decorative veneer / paper or non-woven fabric / cloth, or a sheet having a laminated structure of polyvinyl chloride / decorative veneer / cloth, the fabric weaving trace is obtained by heat and pressure. Barrel irregularities appear on the sheet surface, which is a major problem in design.

On the other hand, in the decorative sheet of the present invention, the colored polyvinyl chloride film is interposed between the cloth and the resin layer on the sheet surface, so that the fold of the cloth is projected on the sheet surface by a kind of relaxation action. Is effectively suppressed. Therefore, the surface of the sheet of the present invention has an extremely smooth surface without being affected by the weaving method and woven pattern of the fabric.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

As shown in FIG. 1, the decorative sheet 1 of this embodiment
Is a transparent soft polyvinyl chloride film 2 with a thickness of 150μ,
0.15μ thick maple thin veneer veneer 3, thickness 80
μ of a colored soft polyvinyl chloride film 4 as a white film and a 200 μm-thick broad cloth 5 in this order from the surface side and between each of the adhesive layers 6, 7 and 8
Are laminated and bonded together, and integrated by hot pressing.

The adhesive layer 6 is composed of an ethylene vinyl acetate emulsion adhesive or a polyurethane liquid adhesive, and the adhesive layers 7 and 8 are composed of the former adhesive.

The sheet of this example was manufactured according to the following process.

First, an ethylene vinyl acetate emulsion adhesive is applied to one side of the colored soft polyvinyl chloride film 4, dried, and then the fabric 5 is adhered thereon.

Next, the same adhesive is applied to the other surface of the colored film 4,
After drying, the precious wood veneer 3 is placed on top of it, placed in a press machine, hot-pressed at 120 ° C., 7 kg / cm ² for 5 minutes, cooled, taken out of the press machine, Obtain a laminate.

Thereafter, an ethylene-vinyl acetate-based emulsion-type adhesive or a polyurethane-based liquid adhesive is applied to the surface of the veneer of the laminate and dried, or in the case of an adhesive film, is laid on the veneer surface, Then, a transparent flexible polyvinyl chloride film 2 is further laid thereon, which is put into a press, a mirror plate is placed on the transparent film 2, and 125 ° C., 8 to 9 kg / cm ² , 10 minutes After heat-pressing and cooling under the conditions, the sheet is taken out from the press to obtain an integrated board decorative sheet 1.

The obtained sheet 1 is very flexible so as to be able to be bent by 180 ° and has a restoring force such that no trace remains even after strong bending, and is shown in FIGS. 2 and 3. like,
Even when the front end of the sheet was folded and the thread was sewn with a sewing machine, the veneer was not broken and a strong sewing process could be performed. Further, defects such as eye filing and air pooling were not visually confirmed. Therefore, it could be used as a sewn product material as a sheet in which maple grain appeared.

(Effects of the Invention) As described above, the decorative sheet for sewn material of the present invention is extremely flexible like synthetic leather or artificial leather, and does not cause any breakage of the plate when folded 180 °. In addition, it has a large restoring ability, and has a characteristic that almost no fold remains even after strong bending or folding.
That is, it has extremely high flexibility (variable shape) that can withstand sewing, resilience, and necessary mechanical strength.

In addition, the decorative sheet of the present invention not only can satisfactorily present the grain of a natural precious wood veneer, but also has a practical problem in that the surface where the grain of the board appears appears, such as air pockets or flaws. There is no problem at all, and the sheet itself has the high impermeability required for sewing products.

Therefore, according to the present invention, a novel sheet material useful for sewing products such as bags and footwear can be provided.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a decorative sheet for sewing product material according to an embodiment of the present invention, and FIGS. 2 and 3 are sectional views showing a mode of sewing processing using the decorative sheet of FIG. is there. In the figure, 1 ... board decorative sheet 2 ... transparent soft polyvinyl chloride film 3 ... thin precious wood veneer 4 ... colored soft polyvinyl chloride film 5 ... fabric 6, 7, 8 ... adhesive layer

Claims (1)

(57) [Claims] (1) laminating and attaching a transparent soft polyvinyl chloride film, a thin precious wood veneer, a colored soft polyvinyl chloride film and a fabric in this order from the surface side and with an adhesive interposed therebetween; A decorative sheet for a sewn product material, which is integrated by hot pressing.